The terga, sterna and pleura of cockroach body are joined by:

Options

A. Arthrodial membrane
B. Cartilage
C. Cementing glue
D. Muscular tissue

Answer

To answer the question "The terga, sterna, and pleura of the cockroach body are joined by:", we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Components**:
- The question mentions three parts of the cockroach's body: terga, sterna, and pleura.
- Terga refers to the dorsal plates, sterna refers to the ventral plates, and pleura refers to the lateral plates of the cockroach.

2. **Understand Their Arrangement**:
- In the cockroach's segmented body, each segment is made up of these three components (terga, sterna, and pleura).
- These components are essential for the structure and function of the cockroach's exoskeleton.

3. **Explore the Connections**:
- The terga, sterna, and pleura need to be connected to allow for flexibility and movement, which is crucial for the cockroach's locomotion.

4. **Identify the Correct Joining Structure**:
- The options provided are:
a) Arthrodial membrane
b) Cartilage
c) Cementing glue
d) Muscular tissue
- Among these, the arthrodial membrane is known to be a flexible connective tissue that allows for movement between the hard plates of the exoskeleton.

5. **Conclusion**:
- Therefore, the terga, sterna, and pleura of the cockroach body are joined by the **arthrodial membrane**.

### Final Answer:
The terga, sterna, and pleura of the cockroach body are joined by **arthrodial membrane**.